En un restaurante una taza de café está a 100ºC para tenerlo listo para la venta, ya que se enfría al rato a la temperatura del lugar (20ºC), liberando 800 cal al ambiente. Si una persona acude al restaurante para tomarse un buen café para empezar su jornada y le comunican que esta frío y se lo van a calentar a 50ºC, ¿Qué cantidad de calor le proporciona la estufa para lograrlo?

Why is alchemy not considered to be a science ?

1) sections 1, 2, and 10 are significant primarily because they suggest the likelihood that a) widow wycherly is actually the woman in the full-length portrait. b) dr. heidegger wants to include his guests in an experiment with the water. c) dr. heidegger plans to drink some of the water from the vase and needs witnesses. d) the guests will be asked to witness dr. heidegger's transformation when he drinks the water.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative